Murkel Alejandro Dellien Velasco (born 16 September 1997) is a Bolivian tennis player. He has a career-high ATP singles ranking of No. 168, achieved on 15 July 2024. He is the current No. 2 Bolivian tennis player. He also has a career-high ATP doubles ranking of No. 174 achieved on 1 April 2024. Dellien represents Bolivia at the Davis Cup, where he has a W/L record of 2–4.
In July 2024, he won his maiden Challenger title at the 2024 Ion Țiriac Challenger in Brașov, Romania with a win over Dmitry Popko in the final. With his brother Hugo winning the title at the 2024 Iași Open, also in Romania, the Delliens became the first brothers to win a Challenger title in the same season since the Cerúndolos in 2022.
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ATP Challenger Tour (1–3) |
Loss | 0–1 | Tigre, Argentina | Challenger | Clay | Juan Manuel Cerúndolo | 6–4, 4–6, 2–6 | |
Loss | 0–2 | Santa Cruz de la Sierra, Bolivia | Challenger | Clay | Camilo Ugo Carabelli | 4–6, 2–6 | |
Win | 1–2 | Brașov, Romania | Challenger | Clay | Dmitry Popko | 6–3, 7–5 | |
Loss | 1–3 | Izida Cup, Bulgaria | Challenger | Clay | Zdeněk Kolář | 2–6, 2–6 |
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ATP Challenger Tour (3–2) |
Loss | 0–1 | Corrientes, Argentina | Challenger | Clay | Nicolás Álvarez | Guido Andreozzi Guillermo Durán | 5–7, 2–6 | |
Loss | 0–2 | Prague, Czech Republic | Challenger | Clay | Adrian Andreev | Victor Vlad Cornea Andrew Paulson | 3–6, 1–6 | |
Win | 1–2 | Coquimbo, Chile | Challenger | Clay | Valerio Aboian | Tomás Farjat Facundo Juárez | 7–6(7–4), 6–0 | |
Win | 2–2 | Punta del Este, Uruguay | Challenger | Clay | Federico Agustín Gómez | Guido Andreozzi Guillermo Durán | 6–3, 6–2 | |
Win | 3–2 | Buenos Aires, Argentina | Challenger | Clay | Facundo Mena | Felipe Meligeni Alves Marcelo Zormann | 1–6, 6–2, 12–10 |
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ITF WTT (6–3) |
Loss | 0–1 | M15 Naples, USA | WTT | Clay | Pedro Boscardin Dias | 3–6, 6–7(5–7) | |
Win | 1–1 | M15 Quito, Ecuador | WTT | Clay | Arklon Huertas del Pino | 7–6(7–1), 6–3 | |
Win | 2–1 | M15 Quito, Ecuador | WTT | Clay | Juan Bautista Otegui | 6–3, 6–2 | |
Loss | 2–2 | M25 Maribor, Slovenia | WTT | Clay | Hernán Casanova | 4–6, 3–6 | |
Win | 3–2 | M15 Santa Cruz de la Sierra, Bolivia | WTT | Clay | Conner Huertas del Pino | 6–0, 6–2 | |
Win | 4–2 | M15 Santa Cruz de la Sierra, Bolivia | WTT | Clay | Franco Roncadelli | 7–6(7–5), 6–3 | |
Loss | 4–3 | M25 Río Cuarto, Argentina | WTT | Clay | Pol Martín Tiffon | 6–7(7–9), 6–3, 5–7 | |
Win | 5–3 | M25 Punta del Este, Uruguay | WTT | Clay | Gonzalo Bueno | 6–4, 3–6, 7–5 | |
Win | 6–3 | M25 Punta del Este, Uruguay | WTT | Clay | Álvaro Guillén Meza | 6–1, 6–0 |
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ITF Futures/WTT (9–6) |
Hard (1–0) |
Clay (8–6) |
Grass (0–0) |
Carpet (0–0) |
Loss | 0–1 | Bolivia F2, Bolivia | Futures | Clay | Hugo Dellien | Facundo Mena Sebastián Serrano | 3–6, 5–7 | |
Loss | 0–2 | Bolivia F3, Bolivia | Futures | Clay | Hugo Dellien | Franco Feitt José María Páez | 3–6, 3–6 | |
Win | 1–2 | M25 Wichita, USA | WTT | Hard | Nicolás Acevedo | John McNally Benjamin Sigouin | 6–4, 2–6, 12–10 | |
Win | 2–2 | M15 Ibagué, Colombia | WTT | Clay | Boris Arias | Alejandro Gómez Alejandro Hoyos | 6–4, 3–6, 10–4 | |
Win | 3–2 | M25 Lima, Peru | WTT | Clay | Jorge Panta | Cayetano March Pol Martín Tiffon | 7–6(7–4), 7–6(7–3) | |
Loss | 3–3 | M15 Córdoba, Argentina | WTT | Clay | Boris Arias | Ignacio Carou Alejo Lorenzo Lingua Lavallén | 4–6, 7–5, 4–10 | |
Win | 4–3 | M25 Rosario, Argentina | WTT | Clay | Arklon Huertas del Pino | Tomás Farjat Ignacio Monzón | 6–3, 6–3 | |
Win | 5–3 | M25 Rosario, Argentina | WTT | Clay | Arklon Huertas del Pino | Román Andrés Burruchaga Juan Ignacio Galarza | 6–3, 7–5 | |
Loss | 5–4 | M15 Quito, Ecuador | WTT | Clay | Arklon Huertas del Pino | Igor Gimenez Nicolas Zanellato | 2–6, 6–7(5–7) | |
Win | 6–4 | M15 Quito, Ecuador | WTT | Clay | Arklon Huertas del Pino | Alejandro Mendoza Jorge Panta | 6–3, 7–5 | |
Win | 7–4 | M25 Koksijde, Belgium | WTT | Clay | Hernán Casanova | Zvonimir Babić Simon Freund | 6–1, 4–6, 10–5 | |
Win | 8–4 | M25 San Miguel de Tucumán, Argentina | WTT | Clay | Valerio Aboian | Franco Emanuel Egea Gabriel Alejandro Hidalgo | 6–7(5–7), 7–5, 10–7 | |
Loss | 8–5 | M25 Jablonec nad Nisou, Czech Republic | WTT | Clay | Pedro Sakamoto | Sebastian Fanselow Dominik Kellovský | 2–6, 4–6 | |
Win | 9–5 | M25 Córdoba, Spain | WTT | Clay | Valerio Aboian | Imanol López Morillo Benjamin Winter López | 6–3, 6–7(4–7), 11–9 | |
Loss | 9–6 | M25 Kassel, Germany | WTT | Clay | Stefan Latinović | Jiří Barnat Patrik Rikl | 4–6, 4–6 |
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